Pennsylvania electors get police protection because liberals are so tolerant and not violent at all.

“I’m a big boy,” said Khare, an India-born engineer and a longtime
Republican from Warren County, who estimates he receives 3,000 to 5,000
emails, letters, and phone calls a day from as far away as France,
Germany, and Australia. “But this is stupid. Nobody is standing up and
telling these people, ‘Enough, knock it off.’ ”
Pennsylvania is
not among those states that require its electors to vote for the
candidate who won the state. This year, that was Trump, who became the
first Republican presidential candidate to win Pennsylvania in nearly
three decades.
Nonetheless, electors are usually party stalwarts —
people handpicked by the presidential nominee and their state parties
and expected to remain loyal.